FAQ Category
FAQ Answer
Avehicle's speed can be made by measuring the time it takes to travel one mile. The best way to conduct the test is to set cruise at one speed and measure the time it takes to travel between two green mile markerson interstateor other US/state highways.
Using the seconds on the left on the chart below, the corresponding mph is listed in the right column.
| Seconds | Miles Per Hour |
|---|---|
| 45.5 | 79 |
| 46 | 78 |
| 46.7 | 77 |
| 47 | 76 |
| 48 | 75 |
| 48.5 | 74 |
| 49 | 73 |
| 50 | 72 |
| 50.5 | 71 |
| 51.5 | 70 |
| 52 | 69 |
| 53 | 68 |
| 53.5 | 67 |
| 54.4 | 66 |
| 55 | 65 |
| 56 | 64 |
| 57 | 63 |
| 58 | 62 |
| 59 | 61 |
| 60 | 60 |
| 61 | 59 |
| 62 | 58 |
| 63 | 57 |
| 64 | 56 |
| 65.5 | 55 |
| 66.5 | 54 |
| 68 | 63 |
| 69 | 52 |
(Revised 07-2003)
